How to Rosin Your Bow

What is Rosin?

Rosin is a solid, sticky substance made from the sap of pine or conifer trees. It's applied to bow hair to create the friction needed to produce sound on string instruments such as the:

• Violin

• Viola

• Cello

• Double Bass

Without rosin, your bow would glide silently across the strings.

Types of Rosin:

• Light Rosin – Typically harder, preferred in warmer climates.

• Dark Rosin – Softer, stickier; often better in cooler environments.

• Specialty Rosins – Formulated for specific playing styles or climates.

All WA Music Co. hire instruments include a free mini rosin. We also stock premium rosins from brands like Cecilia, Pirastro, Larica, Leatherwood, and more.

How to Apply Rosin to Your Bow

1. Tighten the Bow Hair

Before applying rosin, make sure the bow hair is taut using the screw at the frog (bottom end of the bow).

2. Position Your Hands

• Hold the bow in your left hand with the frog facing up.

• Hold the rosin in your right hand, with the flat cake surface facing the bow hair.

3. Apply Evenly

• Stroke the rosin gently from frog to tip, keeping even pressure.

• Repeat 4–6 times for a light coat, more if the bow is new or recently cleaned.

Don’t grind the rosin in — gentle, smooth strokes are best.

How Much Rosin Do You Need?

• Too little? You'll get a weak, airy, or slippery sound.

• Too much? The sound may become scratchy, and dust will build up quickly.

Quick Tests:

• Finger Test: Lightly draw the bow across the back of your hand. A faint white line means it’s ready.

• Sound Test: Play a few open strings — you should hear a clean, even tone.

Cleaning and Maintenance

Regular cleaning keeps your instrument in top shape.

Clean the Bow:

• Wipe excess rosin off with a dry, soft cloth.

• Avoid using alcohol or harsh chemicals on the bow hair unless professionally advised.

Clean the Instrument:

• After every session, gently wipe down:

  • Strings

  • Fingerboard

  • Body and top of instrument

  Use a microfibre cloth to prevent scratches and protect your varnish.

If there's stubborn rosin buildup:

• Use a violin-safe polish for varnish.

• For bow hair or strings, ask us about safe cleaners or professional maintenance.

Need Help?

Have buildup you can't remove? Not sure if you’ve applied the right amount?
Visit us in-store and we’ll be happy to help:

📍 WA Music Co.
Shop 1/3, Morris Place, Innaloo WA 6018
📞 (08) 9244 9559

Bonus Tip:

New bows may need extra rosin at first — around 8–10 full strokes. After that, a light touch is all you need before each practice session.